CVE-2026-113002 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Transactions Platform in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified within the Chromium-based Transactions Platform represents a critical failure in memory safety mechanisms, specifically manifesting as a memory corruption flaw that precedes version 156.0.8078.47 of Google Chrome. This defect is classified under CWE-122, which denotes heap-based buffer overflow or similar out-of-bounds write operations where the application fails to properly validate input lengths against allocated memory boundaries. The Transactions Platform handles sensitive financial data and payment processing logic within a highly restricted execution environment designed to isolate untrusted web content from the user's system resources. When an attacker crafts a malicious HTML page containing specifically engineered JavaScript or embedded objects, they can trigger this memory corruption during the parsing or rendering of transaction-related DOM elements.
The technical nature of this flaw allows for arbitrary read access within the browser sandbox boundaries. Unlike typical use-after-free vulnerabilities that might lead to code execution if combined with other primitives, this specific instance primarily facilitates information disclosure by allowing a remote attacker to leak sensitive data from memory locations that should remain inaccessible due to Chrome's multi-process architecture and site isolation policies. The severity is rated as Medium because while the sandbox provides significant protection against full system compromise, bypassing these boundaries can expose cookies, session tokens, or other confidential user data stored in browser memory structures associated with the transaction context.
From an operational perspective, this vulnerability poses a direct risk to users engaging in online banking, e-commerce transactions, or any activity involving sensitive financial credentials hosted within Chrome tabs. An attacker could host a malicious webpage and lure victims via phishing campaigns or drive-by downloads. Upon visiting the crafted page, the browser would process the malformed content, triggering the memory corruption that enables reading of sandboxed memory regions. This could lead to session hijacking, credential theft, or detailed profiling of user financial activities without requiring elevated privileges on the host operating system.
Mitigation strategies focus primarily on immediate software updates and defensive browsing practices. Users must upgrade Google Chrome to version 156.0.8078.47 or later where these memory safety checks have been reinforced by Chromium engineers. For organizations managing enterprise deployments, enforcing automatic update policies ensures that endpoints remain protected against known exploitation vectors. Additionally, enabling strict site isolation features and disabling unnecessary plugins can reduce the attack surface available to such exploits. Security monitoring should also look for anomalous network traffic patterns indicative of data exfiltration following visits to untrusted web sources, although detection at this stage is challenging due to the stealthy nature of memory reading attacks that do not necessarily trigger traditional signature-based alerts.